Voicemail and payment installments

I have two issues, and have contacted live agents.

1st issue - i have no access to my voicemail. *86 gives me a responce " sorry your accountvhas no access to the system. Please contact your system administrator. "  This message after intalked to a live agent through the mobile app.

2nd issue - For whatever reason a payment installment arrangement is  on my account. I have asked numerous agents to remove. This has been going on since February 2026. This is for cable, and mobile device.